a cetacean, Grampus griseus, of the dolphin family, widely distributed in northern seas.
2.
any of various related cetaceans, as the killer whale, Orcinus (Orca) orca.
3.
a giant whip scorpion common to Florida.
Origin: 1520–30; earlier grampoys, variant (by assimilation) of graundepose great fish, equivalent to graundegrand + pose, poys < Middle French pois, peis < Latin pisce- (stem of piscis) fish; replacing Middle English gra(s)peis < Middle French ≪ Latin crassus piscis fat fish